I tried with my dist-upgrade'd kanotix version (kernel 2.6.18.1.kanotix-1) but even if:
- it get recognised as usb
- it get the /dev/input/wacom correct link
- I change xorg.conf file as wacom site suggests
I could not even get it mouve my mouse (not to talk about pressure sensitivity).

It seems that the issue is coming from kernel 2.6.18.1.kanotix-1 or from some missing config linked to it.
I tried both with Kanotix 2006-01-RC4 and with 2005-04 with kernel 2.6.18.1 and in both case the tablet is not even making move anything.